Winding-machine.



C. R. UNDERHlLLi WINDING MACHINE.

APPLICATION FILED NOV. 5, 1913.

Patented June 15, 1915.

3 SHEETS-SHEETI Wineawaaf C. R. UNDERHILL.

WINDING MACHINE.

- APPLICATION FILED NOV. 15, 1913.

1,148,385., PatentedJune 15, 1915.

3 SHEETS-SHEET 3- 11m? 71 74 Iv] IIIIIiIIIE;

Wiznesses:

1 keep the tension on the wire throughout eras 'rnrnr ion.

.x CHARLES R. UNDERHILL, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE ACME v WIRE COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

WINDING-MACHINE.

To all whom it may concern Be it known that 1, CHARLES R. UNDER- HILL, a citizen of the United States, and a resident of, New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Winding-Machines,.of which the following is a specification.

This invention relates to a winding machine, and particularly to a machine for winding coils of wire traveling at high speed and under considerable tension, ,so.

that the coils formed will be in clos contact with one anothen The principal object of the present invention is to provide a machine in which electroma'gnets made from insulated wire may be wound at high speed and a subtraveling strand while at the same time utilizing the strand itself to control both its own rate of travel and the manner in which the coils are'wo'und in close contact with one another.

In winding magnets it is important to the winding operation as nearly constant "as possible, and it is well known that it is exceedingly diificult to do this. In order to obtain the desired result I deem it important to provide for a mutual control between the speed of the winding mandrel and the speed of the spool orsource of supply of wire to be wound upon that mandrel. such a mutual control lightness of parts is important, it.being particularly important that the mandrel itself be light and that all inertia and momentum capable of effecting the rate of travel of thestrand at the winding point maybe as far as possible eliminated.

In winding insulated wires, in order to obtain the maximum number of coils in 'a traveling strand a suitable lag so that each coil that has been wound may serve as a guide for the next succeeding coil, substantially as in the old hand-winding process. In winding insulatedwires in this manner to form electromagnets it y is particularly stantial constant tension maintained on the To obtain trated in which,

s ecification of Letters ratlitf""" Pafljgntefi June 15, 19 15 Application filed November 15, 1913. Serial No. 801,153.

' important to have a sensitive control of the position or lag of the strand during the winding of each turn, especially when windmg at high speed. 7

The principal object of this invention is to provide an improved winding machine in which there is both a sensitive control of the tension on the traveling strand adapted to maintain such tension substantially constant, and in which there is also a very sensltlve regulation 1 by the action of the traveling strand itself of the winding of that strand in such a manner as to form a helix made up of coils in close contact with one another.

The particular embodiment of the present invention which is illustrated herein is a winding machine in which the transverse pull of the. tensioned strand traveling at high speed is depended upon to govern the 1 action of suitable controlling means oper- Other features of my present inventionnot hereinbefore referred to will be hereinafter described and claimed and are illusthe accompanying drawings, in

prior application, Serial.

Figure 1 is a sectional side elevation of a simple type of winding machine embodying suitable means for automatically con-- trolling the rate of travel of the strand being wound through the tension exerted on said strand, and also embodying meanscontrolled 'by said tensioned strand for automatically laying the successive coils in close contact with one another in each direction of winding; Fig. 2 is a diagramma'tic view and partial side elevation of those portions of said machine which co operate ;-forcontro1ling the tension of the strand; Fig. 3 is a diagrammatic plan with parts broken away, of the machine shown 1n Fig. 1, and lllustrates both the tensioning vmeans and the means for controlling the laying of the coils in close succession, and

Fig. 1 is a diagrammatic view and partial plan illustrating more particularly the electrical controlling means governing the laying of the coils and the reversing of the direction of winding.

Similar characters designate like parts in all the figures of the drawings.

All of the various operating parts of the winding machine shown may be mounted upon a suitable base, such as 2, or upon suitable standards rising therefrom, the principal ones of which are shown at 3, 4, 5, 6 and 7. tute themeans for mounting the spool or source of supply from which the strand comes and the winding mandrel on which said strand is to be wound.

The supply spool is indicated at 8 and is mounted on a short shaft or arbor, 9, on the supports 1, in such a manner as to turn freely unless its movement is positively retarded. The mandrel, which may be of the arbor or shaft, 11, constituting part of the driving means for the mandrel, it being illustrated as the armature shaft of an electric motor, 12, employed for turning said mandrel.

The strand in passing from the spool 8 to guide-sheave operative for laying the strand on the mandrel in coils in close succession. This guide-sheave may be of the type indicated at '13,. it being shown as suitably mounted on a feed-nut, 14, for traveling movement back and forth along a feedscrew, 15, which may be rotated by any suitable driver, such as an electric motor, 16. This feed-screw here constitutes an extension of the armature shaft of the motor 16, and has its free end mounted in the upright 6 for support. It .will be noticed that sep arate drivin means are employed for turning the fee -screw and the arbor of the winding mandrel respectively in order that the work to be done in turning the winding mandrel may be reduced to the minimum.

In the case of the winding mandrel 10, while the rate of rotation should be substantially constant, yet in order to obtain a proper regulation of the winding actlon provision must be made for varying the speed o-f-said mandrel and for obtaining a var1ation in the speed substantially instantaneously. For this reason the motor 12: should be one in which such a variation of speed may be readily obtained. That shown is a series motor having suitable means for controlling the action thereof and obtaining a close regulation of the speed of rotation of the armature shaft 11. I prefer to regulate the speed of this shaft by shunting more or less of the current normally passing through the field windings or armature windings, as

In this case the supports 4 and 5 constithe case may be. The manner in which this regulating action is preferably secured will be hereinafter described more in detail.

In addition to obtaining a close regulation of the rate of travel of the wire or other strand at the winding point of the mandrel,

I also preferably employ means for obtain ing a close regulation of the rate of travel of said strand at the point of supply. In therespondingly regulating the pull of the.

tended to be controlled by the tension there- I on, this tension serving in the present case to control the rate of travel both at the point of supply and at the winding point. In order that the changes in the tension of the strand being wound may bring about a substantially instantaneous regulation of the speed of the motor 12 controlling the winding operation, or of the spool 8 controlling the paying out of the strand, or of both of these, the portion of the strand between the point of supply and the winding point is preferably carried around a suitable guidepoint to form a loop and this guide-point is shiftable in a path of considerable length. The object of this is to obtain at the guidepoint controlled by this loop a very sensitive action and to transmit the movement that takes place at this guide-point to another point controlling the rate of travel of the strand being wound. This guide-point in the present case is the axis of a guidesheave, 26, mounted to turn in this instance on a rock-arm, 27,suitably pivoted at 28, and having in the construction shown a controller-arm or switch-arm, 29, carrying a contact, 30, adapted to travel over a series of contacts, 31, of a suitable rheostat, 32, for the purpose of obtaining a line regulation of the flow of-current in acontrolling electric circuit, in this case the circuit of the series motor 12 governing the winding mandrel. A second controller-arm or switch-arm, 33, is also shown in fixed relation with the rockarm 27 and carries a contact, 34," movable over a series of contacts, 35, of said rheostat constitute a light rocking element. freely movable about the axis 28 in one direction under the influence of the tension exerted by the shortening loop, Z, of the strand, 8, being wound, andalso freely movable in the opposite direction under the "influence of a suitable actuator, such as a light spring, 36, opposing the pull of said shortening loop.

.The tension of the spring 36 may be regulated, as shown in Fig. 1 by an adjustingscrew, 37. As the strand travels around the, various rotary elements from the spool 8 to the winding mandrel and the rate of travel of the strand at the point of supply or at the winding point, or both, varies from time to time, the length of the loop Z will correspondingly change and as it'does the rockarm 27 with its guide-sheave 26 will be swung in one direction or the, other and the ratio of the movement of the mandrel and the supply-spool at every moment will be accurately indicated and measured-by the position and movementof said rock-arm and the parts connected thereto. Said rock-arm will, of course, swing tow the right in Fig. 1

as the tension on the strand between the point of supply and the winding point de= creases, and will swing to the left as said 0 one of'which is indicated at 38 and serves to p tension increases, and becomes effective to overcome the power exerted by the spring 36.

As said rock-arm swings in one direction or the other the controller-arms 29 and 33 will correspondingly swing over the contacts 31 and 35 ofthe two sets of resistjances of the rheostat 32, and the current passing through the brake-controlling solenoid and the series motor governing the rate of rotation of the mandrel will be correspondingly cut down or built up as the case may be. Jr

'The manner in which theautomatic elec-' rows as cooperating with the rows of con tacts 31 and of two sets of resistance coils,

control the solenoid 25, while the other is divided into two sections, 39 and 40, controlling respectively the armature and field windings ofthe series motor-12.

41-42 and 43 44 designate terminals which, it will be understood, are connected with a suitable source or sources of electric energy,and it will be seen that when there is no resistance 38 in the circuit of the solenoid 25 and no resistance 39 or. in shunt with the circuit of the armature 45 or the field windings 46 of the motor 12 the full strength of the current employed to energize said solenoid will flow through the same and the full strength of thecur'rent used in the motor 12 will pass through both the arma .of the series 31 the circuit of the motor 12 will be directly through the field windings and the armature windings thereof, as will be clear from said diagram. When, however, the controller arm 29 swings either to the right or to the lefton to thecontacts controlling either the resistance 40 or the resistance 39a shunt of greater or less resistance around either thefield windings or the armature windings, as the case may be, will be established and a-portion of the current traversing such windings will be correspondingly shunted, as will be clear from said diagram. When said controller-arm 29 reaches its. extreme right-hand position the field windings 46 will be completely shunted and all the current will pass from terminal 44 through conductor 47, resistance 40, controller-arm 29- and conductor 48, to and through the armature windings without passing through the field windings; while when in its extreme left-hand position all of the current will pass from terminal 44 through conductor 47, through the windings 46, the conductor 48, controller-arm 29 and conductor 49, to the opposite terminal 43 without passing through the armature windings 45,'and thus an absolute short circuit of the armature will be established,v and the motor will be instantaneously stopped automatically when the controller-arm 29 reaches its extreme left-hand position.

As before stated, the strand in its passage from the supply spool 8 to the winding point of the mandrel .10 passes around the guide-sheave 13 carried by the feed-nut 14; The feed-nut 14 and the feed-screw l5 controlling its movements are here illustrated as a simple and well-known means for obtaining the desired traverse movements of the strand as it passes to the mandrel. Other means might of course be employed to accomplish the same result. In the present case these two parts 14 and 1 5 co'nstitute the main elements of the. positive operatmg means hereinbefore referred to for assuring the passage of the strand to the windingpoint'of the mandrel with a lag corresponding substantially to the lag of the strand n handwinding. Normally, however, said feed-nut and feed-screw have no movement, they being held under restraint'by suitable means and released when the lag of the. strand becomes too great. lln this case an escapement mechanism having a sh ftable .this case, only a single rotation of said feedscrew when released, the movable pawl 50 when withdrawn from the path of the stop 51 on the collar, 52, of the feed-screw being almost immediately returned into the path of said stop to engage it at the end of one rotation of said screw. Here the escapement pawl 50 is carried at the end of an armaturelever, 53, pivoted at 54 on the support 7 and normally held in the path of the stop 51 by any suitable means. It is preferably retracted out of the path of the stop 51 by the action of electrical controlling means including an electro-magnet, 55, the armature of which is shown at 56. stop, 57, limits the upward movement of the armature-lever 53. The magnet 55 is intended to be energized whenever the strand 8 lags too far behind the normal. It will be seen that as the winding arbor 11 turns and withit the mandrel 10 a series of coils will be wound on the mandrel which will cause the winding point of the strand to shift gradually from one end to the other of the'mandrel. If the guide-sheave 13 is set at the beginning of the winding operation, as should be the case, in such a position that its guide-point has a slight lag with respect to the winding point at the mandrel and said guide-sheave remains stationary it will be obvious that the angle of lag of the strand and of said guide-pointowill increase progressively. The specific construction illustrated herein is one in which the controlling means operates intermittently to reduce this angle of lag by permitting an intermittent feed-movement of the feed-screw 15 and the guide-sheave 13 carried thereby, this intermitt'ent feed movement serving to permit the guide-point intermittently to follow up the movement of the strand at the winding point.

To ment mechanism just described, I have shown electrical controlling means embodying a light circuit-controlling arm in the path of the moving strand and in position to coact therewith and be shifted thereby when the angle of lag of the strand is excessive, the position of the strand at such time of course being largely determined by the tension exerted thereon. Preferably two of these circuit-controlling arms are employed one coiiperating with the strand in one direction of winding of a helix, and the other 66 ably movable in unison with the guidec'o6perating with the strand when a helix is being wound in the opposite direction. These circuit-controlling arms are prefer- A suitable backbring about the release of the escapetwo insulated circuit-controlling arms or switches, 61 and 62, the former of which is coiiperative with the strand 8 when the winding is proceeding in the direction shown in Fig. 3, and the other of which is coiiperative with said strand when the winding is in the opposite direction. Here each of these arms 61, and 62 carries an antifriction roller, 63 or 64, to be engaged by the tensioned strand 8, each of these being of suflicient length to coiiperate properly with the strand both at the beginning of the winding of the magnet and when the winding is about finished. Each arm 61 and 62 also carries a contact, such as 65 or 66, adapted to engage an insulated and preferably adjustable contact, 67 or 68, on the bracket or slide 58. The antifriction roller 63 is engaged by the strand and moved to the left when the angle of lag of the strand becomes excessive during the winding in the cuit-controlling arms sidewise far enough to bring either the contact 65 into engagement With the contact 67 or the contact 66 into engagem'ent with the contact 68 a circuit will be closed from a' source of energy, such as 70, Y

through the electromagnet 55. In the case of the controlling-arm 61, the circuit is from the battery 70 through conductor 71, contacts 67 and 65, switch-arm 61, conductor 73,

magnet 55, conductor 73 and conductor 74 back to the battery. In the case of the switch-arm 62, the course is substantially the same except that from conductor 71 the current passes by way of conductor '75, contacts 68 and-66, and switch-arm '62 to the conductor 73. Whenever contact is made at either of the points 67' or 68 and the magm net 55' is energized the escapement will release the feed-screw and permit it to be turned instantly-a single rotation by the motor 16, which will result in asing'le forward movement of the feed-nut 14 and the guide-sheave 13 along the feed-screw. As often as the winding of the coils on the mandrel causes an excessivqagin-the portion of the tightly tensioned strand between thewinding point and the guide-point of area-ea thus breaking the circuit through the magnet 55.

Vhenever the winding strand arrives substantially at the end of the mandrel its movement is intended to be reversed also in this case through the action of suitable electrical controlling means. The reversing means shown comprises a reversing switch, 76, for the electric motor 16, the action of which reversing switch may be controlled by an electric circuit including circuit-controlling arms similar to those shown at 61 and 62. The means illustrated comprises two switch-arms 77 and 78, mounted on suit able uprights and having near their free ends antifriction rollers, 79 and 80, and contacts, 81 and-82, corresponding to those of the switch-arms 61 and 62. A pair of contacts, 83 and 81', also preferably adjustable, cooperate with the contacts 81 and 82 on said switclrarms 77 and 78, said contacts 83 and 84 being also suitablv supported on the main base. Conductors 85 and 86 connect the contacts 83 and 84 respectively with the conductor 71 leading to one side of the battery 70, while conductors 74 and 88 and 89 friction roller 79 and shift the same to the 1 left to bring the contact 81 of the switcharm 77 into engagement with the contact V 83; whereupon the circuit will be closed end of the mandrel it will, of course, shift .the' switch-arm 78-instead of 77, and will close contact at the points 82 and'86, Whereupon the current will'flow' from through conductors 71 and 86, contacts 84 and 82, switch-arm 78 and ,conductor 88 through the solenoid 91, the return circuit being by way of conductors 74 and 89. This will of course result in the energization of the solenoid 91 and the shifting of the reversing switch '76 in the opposite direction to cause a flow of current through the motor 16 in the reverse way to bring about a reversal of the direction of rotation of the armature shaft and feed-screw 15.

At the beginin of the operation of winding a layer or he ix, it will be necessary to give to the strand to be wound a suitable lag. This is preferably accomplished automatically with each layer after the first, thatis to say, by the action of the machine itself, and means are shown herein for this purpose. The means employed may be of any proper construction, but is preferably connected with the reversing switch 76 so as to be governed thereby. By referring to Fig. 3 it will be seen that the feed-screw 15 is connected with the armature shaft by a pin-' and-slot connection, 94:, which permits a slight longitudinal movement of the feedscrew and parts carried thereby. The shifting of said feed-screw and parts is shown as brought about by a shifting-lever, 95, working in the groove of a collar, 96, secured to said feed screw and connected by a link, 97,

to the electrical reversing switch 76. It will be clear that on the movement of the reversing switch in the one direction or the other the connections just described will serve to shift the feed-screw end-wise in a corresponding manner the desired distance. The

feed-screw should of course be held in this position to which it is shifted until the end of a new layer is reached and the parts are to be shifted again. For this purpose I have shown a double cam-wheel, 98, secured to the feed-screw, the circumference of which camwheel is substantially V-shaped and which cotiperates with a spring-pressed rock-arm,

99, the pressure of a spring, 100, serving through an antifriction roller, 101, to hold said cam-wheel and feed-screw in either extreme position to which they may be shifted.

The construction of the arm 99 is such that the. movement of the feed-screw to its extreme position in either direction will cause the wheel 101 to ride over the high point or neutral pointof the periphery of the camwheel 98 to the opposite cam face upon which it will exert pressure in the proper direction for maintainin said feed-screw in either position to which it is shifted. These devices constitute an automatic means for setting the feed-screwwith its guide-sheave 13 in position to give the guide point of said sheave a lagwith respect-to the. windingv pointfiof the mandrel in each direction ofwinding. l

. 'The manner which the tensiononthe strand is varied automatically both at the point of supply and at the winding po1nt,

and the manner in which the feed mechathe direction of its length and sidewise or crosswise thereof., The'degree of tension on the strand largely controls the amount of the sidewise pull of said strand, which in turn controls the action of the electrical means for governing the movements of the traverse device and the angle of lag of the strand; while the movements of the traverse device and the angle of lag of said strand in turn directly aifect the tension on said strand. Because of this there is not only a very sensitive control of the tension by the tensioning means and of the feed by the feed mechanism, but there is also an exceedingly sensitive interdependent control of the tensioning and feeding means each by the other, which results in a correspondingly sensitive and positive control of the winding action under all conditions of operation.

It will of course be obvious that while a simple type of machine is herein illustrated having but asingle tensioning unit and a single unit for controlling the feeding of' the strand to vary the angle of lag thereof, multiple coils may be wound on a plurality of mandrels carried by thesame or different shafts by employing the desired number of 'tensioning and feeding units, no change whatever being required in the mechanism in multiple winding on multiple winding arbors, and only such changes as are wellknown in the art being required for multiple winding on a single winding mandrel while maintaining thorough control of the tension of each strand and of the lateral feed movement thereof.

lVhat I claim is:

1. In a winding machine, the combinavtion with a winding mandrel, of a motor for turning said mandrel, means controlled by the tension of the strand being wound for varying the rate of travel of the turning mandrel, and means controlled by the strand for laying a coil on said mandrel.

2. In a'winding machine, the combination with a; winding mandrel, of a motor for turning said mandrel, means controlled by the tension of the strand being wound for varying the rate of. travel of said strand,

. and intermittently movablemeans controlled lay {he strand for laying a coil on said manre I 3. In a windin machine, the combination with a winding mandrel, of a motor for turning said mandrel, means'controlled turning said mandrel, means controlled by the tension of the strand being wound for varying the rate of travel of said strand, and automatic means controlled by the lag of the tensioned strand being wound for laying a coil on themandrel in close contact with the last preceding coil.

5. In a winding machine, the combination with a winding mandrel, of a motor for turning said mandrel, means controlled by the tension of the strand being wound for varying the rate of travel of said strand, and automatically means having a positive power action controlled by the strand for laying a coil on the mandrel. 4

6. In a winding machine, the combination with a winding mandrel, of a motor for turning said mandrel, means controlled by the tension of the strand being wound for varying'the rate of travel of said strand, and automatically operated traversing means controlled by the transverse pull of the tensioned strand for laying a succeeding coil in close contact with the last coil wound.

7. In a winding machine, the combination with a winding mandrel, of a motor for turning said mandrel, means controlled by the tension of the strand being wound for varying the rate of travel of said strand, and an automatic traverse device movable in parallelism with the axis of said mandrel and the guide-point of which is located by positive power action and at times has a lag with respect to the winding point of the 0011 being wound.

8. In a winding machine,the combination with a winding mandrel, of a motor for turning said mandrel, means controlled by the tension of the strand being wound for varying the rate of travel of said strand, and automatic intermittently movable traversing means the guide-point of which at' times has a lag with respect to the winding point of the coil being wound.

9. In a winding'machine, the combination I operated traversing and automatic traversing means including a source of power other than the strand being wound the guide-point of which is positively located by power from said source for varying the rate' oftravellbffsaid strand, automatic traversing meansha'ving a vari? area,-

for turning said mandrel means controlled by the tension of the strand bein wound forvarymg the rate of travel of said strand, and automatic traversing means for laying successive coils on the mandr el, said means having an intermittent traverse movement.

12. In a winding machine, the combination with a winding mandrel, of a motor for turning said mandrel, means controlled by the tension of t e strand being wound for varying the ra of travel of said strand, and automatic traversing means for laying successive coils on the mandrel, said means 'having normally no movement and also having means controlledby the tensioned strand for imparting traverse movement 13. In a winding machine, the combination with-a winding mandrel, of a motor for turning said mandrel, means controlled by an automatic traverse device for-laying successive coils on'the mandrel the guide-point ofwhich device normally has a lag with respect to the winding point of the coil being wound, and means controlled by the I tensioned strand for intermittently reducing said lag.v

14. In a winding machine, the combination with a winding mandrel, of a motor' for turning said mandrel, means-controlled by the tension of the strand being wound for varyingthe -rate of travel ofj'said strand,

automatic traversingmeanssforlaying successive 'coils onQthemandrel, and electrical v s'a1d movement-a and governed by said strand.

controlling means governing 15.111 a winding machine, the combination with a winding mandrel, of a motor for turning said mandrel," means controlled by the tension. of, the; strandbeing wound "able-traverse m'ovement' and operative for yingswe tie oi n-..th ma drel, a d .T

electricalcontrolling means governing said movement. and governed bysaid strand.

16,, In a windingmaehine', the ficombination vvitha winding mandrel, iii a motor for turning said mandrel, means controlled by that-ten io of thestrand bein "wound. for

source other than varying the rate of travel of said strand, a power-operated device for laying a coil on the mandrel, and means controlled by the strand being wound for governing the movement of said power-operated device.

17. In a winding machine, the combination with a winding mandrel, ofa motor for turningsaid mandrel, means controlled by the tension of the strand being Wound for varying the rate of travel of said strand, a power-operated device for laying a coil on the mandrel, and a controlling device mounted on said power-operated device and operable by the strand being wound for governing the -movernent of said power-operated devicel 18. In a winding machine,'the combination with a winding mandrel, of a motor for .turning said mandrel, means controlled by the tension ofthe strand being Wound for varying the rate of travel of said a coil. on the -mandrel, and electrical controlling means includirig a yielding contact mounted on said power-operated device and strand,-a power-operated device for laying I operable by the tensioned strand being 7 tion with awinding mandrel, of a motor for turning said mandrel, means controlled by the. tension of the strand being wound for varying the rate of travel of said strand, the tension of the strand being wound for. varying the rate of travel of said strand,

a reciprocatory power-operated device for layin'g'onthe mandrel coils of helices running alternately in opposite directions, and

a pair of controlling devices operable alter nately by the tensioned strand being wound for governing the movement of said powerthe tension of thestr'and being; Wound for varying the rate of. travel of said strand, at traversedfevice mounted-"to move back and forth-for winding successive helices in opposite directions, "and electrical reversing means for saidttra erse device, said reverscontrolled by the tensioned 11f? trand." a

ing means being 21. Ina windinginaehine, the combina tion with a winding mandrel, of a motor A for turning "said mandrel, means controlled by the tension of the strand 'beinai wound for/varying the rate'oftr 'av'el of said; strand,

' a,traverse-device' mounted move back and forth for winding successive helices 1n oppositet. directions, and electrical reversing means. controlled the vvtensigmed strand for reversing the directionof movement of traverse device ateach'ien'd of the range.

of mo ement thereof.

22. In a winding. machinethe coiiibina --,tion-- -'Witl1 awwinding -mandrel and e means for supplying a strand, of amotor for turning sa1d mandrel, electrically-controlled means for regulating the rate of travel of the strand, said meansembodying of supply", and automatic means controlled by the winding and including a source of an element controlling said rate of travel and a second element controlled by the ten-- sion vof the-strand, and automatic: means including a'source of power other thanthe strand being wound for laying each coil of the tensioned strand on the mandrel in close contact with'the last preceding coil.

' 23. In a Winding machine, the combination with a' winding mandrel and with means for'supplying a strand, of a motor for turning said mandrel, means controlled bythe tension of the strand being wound 'for'varying its rate of travel at the point power other than the strand being wound for positively locating the winding point ofthe strand and laying each coil of the tensioned vstrand on the mandrel in close' means for supplying a strand, of a motorfor turning said mandrel, Imeans controlled contact with the last preceding coil. V

24:. In a winding machine,v the combination with a winding mandrel and with by the tension of the strand between the point of supply andthe mandrel for varying the speed of said motor, and automatic means controlled by the. winding and in-' cludingta' source of powerother than the strand being wound for positively "locating the winding'poi'nt of the strand and laying each coilof the tensioned strand on the mandrel in close" contact with the last precedingcoil. 1 g v y 25. In a winding machine, the combination witha winding mandreTa'nd' with means for supplying a strand, of a motor for turning said mandrel, circuit-controlling means governed by the tension-ofthe strand between the point ofsupply-"and the mandrel for varying the speed of said mo-v tor, and automatic means controlled by the winding and inclmdinga source of power other than the strand being wound for posithe last preceding coil.

tively locating the winding point of the strand and laying each coil of'the tensioned strand on the mandrel in close 26. In a winding machine, the combina tion with a winding mandrel and with means for supplying a strand," of a motor contact with icense tensioned strand on the mandrel in close contacflwith the last preceding coil.

27; Ina Winding machine, the combination with a winding mandrel and with means for supplying a strand, of a motor strand on the mandrel in close contact with I the last preceding coil.

28.;In a Winding machine, the combination with a winding mandrel and with means forsupplyinga strand, of a motor forturning said mandrel, a take-up device for controlling a loop in the strand between the point of supply and the winding point, electrical controlling means governed b'y-said take-up device for varying the rate of travel of-the strand, and automatic means controlled by the winding and including a source of'power other than the strand being wound for positively locating the winding point of'the strand and layingieach coil i-of the tensioned strand on the mandrel in for turning said-mandrel, an automatictension device controlled by the'tension of the strand for varying the 'rate of travel of' said strand, and automatic means controlled by the winding andincluding a source of power other thanthe s'trand'being wound for positively locating the winding point.

of the strand and laying each coil the firth day w ,OHARLESR.'UNDERHILL." I

close contact with the last preceding coil. 29. In {a winding machine, the combination'with a winding -ma'ndrel and with \means for supplying a strand, of means controlled'conjointly by said mandrel and supplying means for regulating the rate of travel of the strand, and automaticmeans. controlledby the winding and including a source of power other than the strand be ing wound for positively locating the winding point of the strand and laying each coil of the tensioned'strand on the mandrel in close contact with the last preceding coil 30. In a winding machine, the combina-i tion with a winding mandrel and with means for supply'inga strand, of means controlled conjointly by said mandrel and supplying means for maintaining a substantially constant tension-upon the strand, and automatic means controlled'by the sidewise pull of the laggingstrand being wound and operative from a source of power outside said strand for laying each coil of the tensioned strand on the mandrel in close contact with the last preceding co'il.

'- Signed at New Haven in the county of New Haven andSt'ate of Connecticut this of November,'A. D. 1913.-

' Witnesses MARY A. Mummy, 7 EVA TVIsEL. 

